Optical polarization switch and method of using same

Details Optical polarization switch and method of using same Optical polarization switch and method of using same

1997-10-09

2000-02-22

Sikes, William L.

Liquid crystal cells, elements and systems

Liquid crystal optical element

Beam dividing switch formed from liquid crystal cell

349 74, 349117, 349119, G02F 113

Patent

active

060286563

ABSTRACT:
An improved optical polarization switch which provides a wide field-of-view and achromatic action. Two liquid crystal cells are used and are selectively operated in a preferred embodiment to provide three distinct optical states. Interposed between the two nematic liquid crystal cells is a compensating member such as an half-wave retarder or an optical rotator. Such switches are of utility in shutter applications and in high-performance field-sequential color filters.

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